This leaves even more guesswork with the head unit volume. I don't listen to too much rap, but if I do I don't put it past my volume level that is set for the gain with my 0db test tone. Of course, there are SOME rap songs not recorded at 0db like "Sole Survivor" but for almost all others I don't put it past the volume I set my gains to. With the reduced test tone you now have the ability to clip at the volume you set your gain to.
I'm really not understanding why you would ever set your gains with a reduced(I'm assuming -3db) test tone. I thought the reasoning behind setting gains at a certain level is that you can't possibly clip at the volume level you are set to. In this particular scenario that would both fix and unfix the problems at hand, would it not?
I'm fairly new to car audio, but it doesn't make sense to me. Unless actual music never clips at the volume level set at a reduced(Again assuming -3db) test tone. Are there not songs in which there are sustained tones above the -3db level?
Like I said, I'm pretty new and can very well be wrong about this //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif.